Electromagnetic vibrator.



UNITED STATES PATENT (VIFFICE.v

FRANK E. BRIXIUS, OF MANITOWOC, WISCONSIN, ASSIGNOR T0 MANITOWOCELECTRIC IMPLEMENT CO., 0F MANI'IOWOC, WISCONSIN.

ELECTROMAGNETIC VIBRATOR.

Specification of Letters Patent.

Application filed October 21, 1916. Serial No. 126,841.

To all whom t may concern.'

Be it known that I, FRANK E. BRIXIUS, a citizen of the United States,and resident of Manitowoc, in the county of Manitowoc and State oflVisconsin, have invented certain new and useful Improvements inElectromagnetic Vibrators; and I do hereby declare that the following isa full, clear, and exact description thereof.`

The present invention relates to new and useful improvements invibrating devices, and is more particularly directed to the provision ofmeans for vibrating pattern plates disposed in molds, whereby the platesmay upon vibration be disengaged from the sand of the mold, to permitready withdrawal of the plates.

It is primarily the object of the invention to provide a vibratingdevice which is of an exceedingly simple and compact nature, and thepresent invention consists essentially in the provision of anelectro-magnet loosely connected with a body of magnetic material andresiliently urged therefrom whereby upon the passage of successiveelectric impulses through said electro-magnet, it will e successivelyenergized and denergized and through the co-action of the resilientmeans procure vibratory motion of the magnetic body, it beingappreciated that the principle involved may be applied in many otherinstances than in vibrating pattern plates of molds.

A more-detailed object resides in the provision of such a vibratingdevice which adapted to be detachably yet rigidly connected with apattern plate or other work member.

lVith the above and other objects and advantages in view, the inventionresides more particularly in the novel combination, an rangement andformation of parts more particularly hereinafter described andparticularly pointed out in the appended claims.

In the drawings Figure l is a longitudinal sectional view through avibrating device constructed in accordance with the present invention,and

Fig. 2 is a sectional view through the vibrator, the section beingindicated by line 2-2 of Fig. l. l

Referring now to the drawings as exemplified, the vibrator isparticularly adapted for use in connection with pattern plates for moldsand embodies a base plate 1 the usual magnet windings 3. The thimble isprovided with a rectangular core opening 4 for the reception oflaminated core 5, the same as shown being formed with an outer shellpiece 6 bent upon itself to form an upper loop and interposed betweenthe side legs of the same are a series of thin plates which are rivetedto said side plates whereby the same is firmly secured. board portion ofthe core is provided with an aperture through which is extended a headedrod 7 that projects beyond the upper flange of the thimble and extendsthrough an aperture in the supporting bar 8. The rod hasfittedthereabout a coil spring 9 which is interposed between the bar 8and suit/ably disposed nuts 10 that are in threaded union with the endof the rod. The opposite end of the core as shown is normally heldslightly clear of the magnet member or base plate l by the spring 9 andwhen the magnet is energized in the usual manner the core will becausedlto vibrate rapidly and thus exert a series of taps upon saidplate to perform the necessary functions due to the electric impulsesbeing successively passed through the magnet to energize and denergizcdthe same.

lWhile I have shown and described specifically one form of my inventionit is manifest that the structural forms may be varied within theknowledge of a skilled mechanic without departing from the spirit ofsaid invention.

What is claimed is:

1. A'vibrating device comprising, in combination, a magnetic base havingmagnet windings carried thereby, a core disposed in an opening in saidwindings, said core consisting of a shell bent upon itself to form anupper loop, and laminas secured between the side legs of the shell, asupporting bar secured to the top of said windings, and spring meansengaging said shell and supporting bar to urge the core upward, saidcore being adapted to vibrate rapidly and thus exert a series of tapsupon said base when thc magnet is energized, substantially as described.

, Q. A vibrating device comprising, in com- The upper bination, amagnetic Y base plate having "means carried thereby for securing thesame upper loop, a Core interposed and secured betweenthe side legs ofsaid shell, the upper1 looped portion of said shell having an openingtherein, a supporting member secured to the top of said thimble andextending across said oore opening and having therein an aperturealining with the opening oi2 the eore shell, a, headed bolt passing upthrough the openings in said shell and supporting member, and a springcoiled around said bolt and restricted between said supporting memberand a nut on the upper end of said bolt, substantially as described.

in testimony that I claim the foregoing have hereunto set my hand atManitowoc, in the county of Manitowoc and State rif-Iieconsin, in thepresence of two witnesses.

FRANK E. BRIXIUS. Witnesses: RUDE STORKINGER, J. S. ZirrENER.

